61. They will build a wind-power station in the south of the country. A. A win-power station will be built in the south of the country. B. A win-power station will built in the south of the country. C. A win-power station is built in the south of the country. 62. Dont litter or the environment will be polluted! A. If you dont litter, the environment will be polluted. B. If you litter, the environment will be polluted C. If you litter, the environment wont be polluted 63. The price of electricity is high; however, he uses it wastefully. A. Although the high price of electricity, he uses it wastefully. B. Although the price of electricity isnt high, he uses it wastefully. C. Although the price of electricity is high, he uses it wastefully. 64. We often flew kites when we lived in the countryside. A. We used to fly kites when we lived in the countryside. B. We used to flied kites when we lived in the countryside. C. We used to fly kites when we live in the countryside. 65. I didnt use to learn English as well as I do now. A. Now I learned English better than I used to. B. Now I learn English better than I used to. C. Now I learn English worse than I used to. 66. We will build a wind power station in this area next year. A. A wind power station will built in this area next year. B. A wind power station will be build in this area next year. C. A wind power station will be built in that area next year. D. A wind power station will be built in this area next year. 67. Mai has bought less milk than Tom. A. Tom has bought more milk than Mai B. Tom has bought much milk than Mai C. Tom have bought more milk than Mai D. Tom has buy more milk than Mai 68. In spite of being tired, we went out for dinner. A. Although we was tired, we went out for dinner. B. Although we were tired, we go out for dinner. C. Although we were tired, we went out for dinner. D. Despite we were tired, we went out for dinner. 69.These are our pictures. A. These picture are ours B. These pictures are ours C. These pictures are our D. These pictures is ours 70. My friends often walk to school. A. My friend often go to school on foot. B. My friends often go to school on foot. C. My friends often go to school by foot. D. My friends often goes to school on foot.